drm/panfrost: add Amlogic GPU integration quirks

This adds the required GPU quirks, including the quirk in the PWR
registers at the GPU reset time and the IOMMU quirk for shareability
issues observed on G52 in Amlogic G12B SoCs.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200916150147.25753-4-narmstrong@baylibre.com

Author: superna9999

drivers/gpu/drm/panfrost/panfrost_drv.c

@@ -656,7 +656,18 @@ static const struct panfrost_compatible default_data = {
 	.pm_domain_names = NULL,
 };
 
+static const struct panfrost_compatible amlogic_data = {
+	.num_supplies = ARRAY_SIZE(default_supplies),
+	.supply_names = default_supplies,
+	.vendor_quirk = panfrost_gpu_amlogic_quirk,
+};
+
 static const struct of_device_id dt_match[] = {
+	/* Set first to probe before the generic compatibles */
+	{ .compatible = "amlogic,meson-gxm-mali",
+	  .data = &amlogic_data, },
+	{ .compatible = "amlogic,meson-g12a-mali",
+	  .data = &amlogic_data, },
 	{ .compatible = "arm,mali-t604", .data = &default_data, },
 	{ .compatible = "arm,mali-t624", .data = &default_data, },
 	{ .compatible = "arm,mali-t628", .data = &default_data, },